Hopefully this thread catches on with the community, because I'd really like to see a lot of the great info dispersed throughout this site in one place. Manually controlling defenders can really improve a defense, and separates a lot of the great players from the mediocre. I myself have gotten used to starting as a D-lineman and then switching off to whoever is in a position to make a play. But I want to get used to playing a position pre-snap, so that I can make the reads, plays, ect. all myself.
For this thread (adding more for other positions if it catches on), I'd like to get a discussion going where we all add our tips on playing the ILB position manually. I'm not yet good enough to offer any kind of extensive advice, but I will kick things off with some observations.
I've found that I do better when I charge up rather than sprint on run plays. Because of the crafty RB's in this game, sprinting often puts you out of the play if there's even a small cutback. Charging up lets you take down the bigger rb's faster and can even let you land that "Big Hit" which I've fun to use but difficult to master. The one exception is on stretch plays against fast RB's when you need to catch up for a proper angle on the tackle. Also, I've found that using reach tackles while being blocked kills ISO runs up the middle, because it lets you cover so much ground.
I'm hoping there will be more in-depth analysis than that by some of you all, I'm just not in a position to do it myself.